import Vue from 'vue'
import VueRouter from 'vue-router'
import Login from '../components/Login.vue'
import Home from '../components/Home.vue'
import Welcome from '../components/welcome.vue'
import User from '../components/user/User.vue'
import Rights from '../components/power/Rights.vue'
import Roles from '../components/power/Roles.vue'
import Cate from '../components/goods/Cate.vue'
import Params from '../components/goods/Params.vue'
import GoodsList from '../components/goods/List.vue'
import Add from '../components/goods/Add.vue'
import Order from '../components/order/Order.vue'
import Reports from '../components/report/report.vue'

Vue.use(VueRouter)

const routes = [
  { path: '/' , redirect:'/login'},  //检测到/  重定向到login
  {
    path:'/login' , component:Login 
  },
  {
    path:'/home' , component:Home ,
    redirect:'/welcome',
    children:[
               {path:'/welcome', component:Welcome},
               {path:'/users', component:User},
               {path:'/rights', component:Rights},
               {path:'/roles', component:Roles},
               {path:'/categories', component:Cate},
               {path:'/params', component:Params},
               {path:'/goods', component:GoodsList},
               {path:'/goods/add', component:Add},
               {path:'/orders', component: Order},
               {path:'/reports', component: Reports}
            ]
  },
]
const router = new VueRouter({
  routes
})

// 挂载路由守卫
router.beforeEach((to , from , next) =>{
// to 将要访问的路径
// from 代表从哪个路径跳转而来
// next 是一个函数 表示放行
  // next() 放行  next('/login) 强制跳转

  if(to.path === '/login') return next();

  // 获取token
  const tokenStr = window.sessionStorage.getItem('token')
  if(!tokenStr) return next('/login');
  next()

})



export default router
